Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC

  • M. BissetEmail author
  • F. Moortgat
  • S. Moretti
theoretical physics


We perform for the Large Hadron Collider (LHC) a detailed study of charged Higgs boson production via the top-bottom quark associated mode followed by decays into a chargino and a neutralino, with masses and couplings as given by the general minimal supersymmetric standard model (MSSM). We focus our attention on the region of parameter space with \(m_{H^{\pm}} > m_t\) and intermediate values of \(\tan\beta\), where identification of \(H^{\pm}\) via decays into standard model (SM) particles has proven to be ineffective. Modelling the CMS detector, we find that a signature consisting of three hard leptons accompanied by a hadronically reconstructed top quark plus substantial missing transverse energy, which may result from \(H^{\pm} \rightarrow {{\widetilde\chi}}_{1,2}^{\pm} {{\widetilde\chi}}_{1,2,3,4}^0\) decays, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, small \(\vert \mu \vert\) and light sleptons are important prerequisites. We quantify these statements by performing a fairly extensive scan of the parameter space, including realistic hadron-level simulations, and delineate some potential discovery regions.


Parameter Space Higgs Boson Large Hadron Collider Minimal Supersymmetric Standard Model Important Prerequisite 
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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  1. 1.Department of PhysicsTsinghua UniversityBeijingP.R. China
  2. 2.Department of PhysicsUniversity of AntwerpenAntwerpenBelgium
  3. 3.Department of Physics and AstronomyUniversity of SouthamptonHighfield, SouthamptonUK

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